linux/net/tipc
Jon Paul Maloy dff29b1a88 tipc: eliminate delayed link deletion at link failover
When a bearer is disabled manually, all its links have to be reset
and deleted. However, if there is a remaining, parallel link ready
to take over a deleted link's traffic, we currently delay the delete
of the removed link until the failover procedure is finished. This
is because the remaining link needs to access state from the reset
link, such as the last received packet number, and any partially
reassembled buffer, in order to perform a successful failover.

In this commit, we do instead move the state data over to the new
link, so that it can fulfill the procedure autonomously, without
accessing any data on the old link. This means that we can now
proceed and delete all pertaining links immediately when a bearer
is disabled. This saves us from some unnecessary complexity in such
situations.

We also choose to change the confusing definitions CHANGEOVER_PROTOCOL,
ORIGINAL_MSG and DUPLICATE_MSG to the more descriptive TUNNEL_PROTOCOL,
FAILOVER_MSG and SYNCH_MSG respectively.

Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-02 16:27:12 -04:00
..
addr.c tipc: fix two bugs in secondary destination lookup 2015-03-29 13:47:36 -07:00
addr.h tipc: fix two bugs in secondary destination lookup 2015-03-29 13:47:36 -07:00
bcast.c tipc: involve reference counter for node structure 2015-03-29 12:40:28 -07:00
bcast.h tipc: fix potential deadlock when all links are reset 2015-03-29 12:40:27 -07:00
bearer.c tipc: ensure that idle links are deleted when a bearer is disabled 2015-03-10 18:37:36 -04:00
bearer.h tipc: add ip/udp media type 2015-03-05 22:08:42 -05:00
core.c tipc: fix a slab object leak 2015-03-31 23:10:08 -04:00
core.h tipc: remove tipc_snprintf 2015-02-09 13:20:49 -08:00
discover.c tipc: involve reference counter for node structure 2015-03-29 12:40:28 -07:00
discover.h tipc: involve namespace infrastructure 2015-01-12 16:24:32 -05:00
eth_media.c tipc: make media address offset a common define 2015-02-27 18:18:48 -05:00
ib_media.c tipc: rename media/msg related definitions 2015-02-27 18:18:48 -05:00
Kconfig tipc: add ip/udp media type 2015-03-05 22:08:42 -05:00
link.c tipc: eliminate delayed link deletion at link failover 2015-04-02 16:27:12 -04:00
link.h tipc: eliminate delayed link deletion at link failover 2015-04-02 16:27:12 -04:00
Makefile tipc: add ip/udp media type 2015-03-05 22:08:42 -05:00
msg.c tipc: eliminate delayed link deletion at link failover 2015-04-02 16:27:12 -04:00
msg.h tipc: eliminate delayed link deletion at link failover 2015-04-02 16:27:12 -04:00
name_distr.c tipc: involve reference counter for node structure 2015-03-29 12:40:28 -07:00
name_distr.h tipc: resolve race problem at unicast message reception 2015-02-05 16:00:02 -08:00
name_table.c tipc: fix a potential deadlock when nametable is purged 2015-03-17 22:11:26 -04:00
name_table.h tipc: convert legacy nl name table dump to nl compat 2015-02-09 13:20:48 -08:00
net.c tipc: nl compat add noop and remove legacy nl framework 2015-02-09 13:20:49 -08:00
net.h tipc: make tipc node table aware of net namespace 2015-01-12 16:24:32 -05:00
netlink_compat.c tipc: nl compat add noop and remove legacy nl framework 2015-02-09 13:20:49 -08:00
netlink.c tipc: move and rename the legacy nl api to "nl compat" 2015-02-09 13:20:47 -08:00
netlink.h tipc: move and rename the legacy nl api to "nl compat" 2015-02-09 13:20:47 -08:00
node.c tipc: eliminate delayed link deletion at link failover 2015-04-02 16:27:12 -04:00
node.h tipc: involve reference counter for node structure 2015-03-29 12:40:28 -07:00
server.c tipc: withdraw tipc topology server name when namespace is deleted 2015-03-17 22:11:26 -04:00
server.h tipc: make subscriber server support net namespace 2015-01-12 16:24:33 -05:00
socket.c rhashtable: Disable automatic shrinking by default 2015-03-24 17:48:40 -04:00
socket.h tipc: fix netns refcnt leak 2015-03-17 22:11:26 -04:00
subscr.c tipc: fix nullpointer bug when subscribing to events 2015-02-27 18:18:47 -05:00
subscr.h tipc: make subscriber server support net namespace 2015-01-12 16:24:33 -05:00
sysctl.c tipc: add name distributor resiliency queue 2014-09-01 17:51:48 -07:00
udp_media.c tipc: fix compile error when IPV6=m and TIPC=y 2015-03-24 15:20:29 -04:00